Disc brake unit for a bicycle



FIG. 1 is a perspective view of the disc brake unit for a bicycle;

FIG. 2 is a front elevational view of the disc brake unit for a bicycle of FIG. 1;

FIG. 3 is a rear elevational view of the disc brake unit for a bicycle of FIG. 1;

FIG. 4 is a top plan view of the disc brake unit for a bicycle of FIG. 1;

FIG. 5 is a bottom plan view of the disc brake unit for a bicycle of FIG. 1;

FIG. 6 is a right side elevational view of the disc brake unit for a bicycle of FIG. 1; and,

FIG. 7 is a left side elevational view of the disc brake unit for a bicycle of FIG. 1. 

The ornamental design for a disc brake unit for a bicycle, as shown and described. 